std::ldexp

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Defined in header `<cmath>`

float ldexp( float x, int exp );

double ldexp( double x, int exp );

long double ldexp( long double x, int exp );

Multiplies an floating point value x by 2 raised to power exp.

`arg`	-	floating point value
`exp`	-	integer value

returns x×2^exp

If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.

decomposes a number into significand and a power of 2
(function)

scalbn scalbln (C++11)
(C++11)

multiplies a number by FLT_RADIX raised to a power
(function)